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    • https://kb.netapp.com/on-prem/ontap/da/SAN/SAN-KBs/Server_retries_IO_due_to_faulty_SAN_switch_ISL
      The IO operation at logical block address 0x620e0080 for Disk 10 (PDO name: \Device\MPIODisk8) was retried. The IO operation at logical block address 0xecf5b00 for Disk 11 (PDO name: \Device\MPIODisk9...The IO operation at logical block address 0x620e0080 for Disk 10 (PDO name: \Device\MPIODisk8) was retried. The IO operation at logical block address 0xecf5b00 for Disk 11 (PDO name: \Device\MPIODisk9) was retried. Affected server is connected to storage via ISL between two fabrics STIO Adapter:0h, found hung cmd:0xfffff8092a021000(state=5, flags=0x0, ctio_sent=1/1,RecvExAddr=0x11f4f0, OX_ID=0x18b, RX_ID=0xffff,SID=0x20f00, Cmd[2A], req_q_free:721)